Question # 1

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

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subsonic speed

sonic speed

super sonic speed

any one of them

Transverse waves can be set up:

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Solids

Liquids

Gases

All of them

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

Example of vibratory motion is

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mass suspended from a spring

a bob of simple pendulum

mass attached to a spring placed

all of them

The principle of superposition states that

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The total displacement due to several waves is the sum of the displacement due to those waves acting individually

Two stationary waves superimpose to give two progressive waves

A diffraction pattern consists of many interference patterns superimposed on one another

Two progressive waves superimpose to give a stationary wave

The waves which propagate through the oscillations of material particles are known as:

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Mechanical waves

Electromagnetic waves

Any of them

None of them

If the mass of the simple pendulum becomes double, its time period

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increase

decreases

remains constant

none of them

Waves transport energy

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without transport energy

with matter

both of them

none of them

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

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10³

10⁶

10⁹

10¹²

The force which opposes the applied force producing the displacement in the spring is called

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restoring force

periodic force

centripetal force

resistive force

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

A heavily damped system has a fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

Sound waves in air always

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Longitudinal

Transverse

Stationary

Electromagnetic

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

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frequency of S.H.M

period of S.H.M

wave form

none of them

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

The square of 0.4 is:

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Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

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